A unique impossible passthrough cone fidget featuring a fully parametric design that creates a satisfying interactive puzzle and desk toy experience. The cone appears too large to pass through the opening — yet smoothly slides through thanks to the geometric illusion and clever tolerances.

This model is customizable, allowing you to easily adjust dimensions and fit settings to match your printer, preferred size, or desired looseness/tightness. Designed for clean printing with minimal hassle and smooth operation right off the build plate.

Perfect for:

• Fidgeting and stress relief
• Geometry and illusion lovers
• Desk toys and conversation starters
• Testing printer tolerances
• Custom remixes and scaling

Features:

• Fully parametric design
• Smooth passthrough motion
• Print-friendly geometry
• No supports required
• Fun impossible-object style interaction

Print it, tune it, and confuse everyone who picks it up.